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/**
* Copyright 2014 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common.util;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.junit.Assert;
import org.junit.Test;
import com.jogamp.common.nio.Buffers;
import com.jogamp.junit.util.JunitTracer;
import static com.jogamp.common.util.BitstreamData.*;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
/**
* Test {@link Bitstream} w/ int8 read/write access w/ semantics
* as well as with aligned and unaligned access.
* <ul>
* <li>{@link Bitstream#readInt8(boolean, boolean)}</li>
* <li>{@link Bitstream#writeInt8(boolean, boolean, byte)}</li>
* </ul>
*/
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestBitstream02 extends JunitTracer {
@Test
public void test01Int8BitsAligned() throws IOException {
test01Int8BitsAlignedImpl((byte)0);
test01Int8BitsAlignedImpl((byte)1);
test01Int8BitsAlignedImpl((byte)7);
test01Int8BitsAlignedImpl(Byte.MIN_VALUE);
test01Int8BitsAlignedImpl(Byte.MAX_VALUE);
test01Int8BitsAlignedImpl((byte)0xff);
}
void test01Int8BitsAlignedImpl(byte val8) throws IOException {
// Test with buffer defined value
final ByteBuffer bb = ByteBuffer.allocate(Buffers.SIZEOF_BYTE);
System.err.println("XXX Test01Int8BitsAligned: value "+val8+", "+toHexBinaryString(val8, 8));
bb.put(0, val8);
final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb);
final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, false /* outputMode */);
{
final byte r8 = (byte) bs.readUInt8(true /* msbFirst */);
System.err.println("Read8.1 "+r8+", "+toHexBinaryString(r8, 8));
Assert.assertEquals(val8, r8);
}
// Test with written bitstream value
bs.setStream(bs.getSubStream(), true /* outputMode */);
bs.writeInt8(true /* msbFirst */, val8);
bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
{
final byte r8 = (byte) bs.readUInt8(true /* msbFirst */);
System.err.println("Read8.2 "+r8+", "+toHexBinaryString(r8, 8));
Assert.assertEquals(val8, r8);
}
}
@Test
public void test02Int8BitsUnaligned() throws IOException {
test02Int8BitsUnalignedImpl(0);
test02Int8BitsUnalignedImpl(1);
test02Int8BitsUnalignedImpl(7);
test02Int8BitsUnalignedImpl(8);
test02Int8BitsUnalignedImpl(15);
test02Int8BitsUnalignedImpl(24);
test02Int8BitsUnalignedImpl(25);
}
void test02Int8BitsUnalignedImpl(final int preBits) throws IOException {
test02Int8BitsUnalignedImpl(preBits, (byte)0);
test02Int8BitsUnalignedImpl(preBits, (byte)1);
test02Int8BitsUnalignedImpl(preBits, (byte)7);
test02Int8BitsUnalignedImpl(preBits, Byte.MIN_VALUE);
test02Int8BitsUnalignedImpl(preBits, Byte.MAX_VALUE);
test02Int8BitsUnalignedImpl(preBits, (byte)0xff);
}
void test02Int8BitsUnalignedImpl(int preBits, byte val8) throws IOException {
final int preBytes = ( preBits + 7 ) >>> 3;
final int byteCount = preBytes + Buffers.SIZEOF_BYTE;
final ByteBuffer bb = ByteBuffer.allocate(byteCount);
System.err.println("XXX Test02Int8BitsUnaligned: preBits "+preBits+", value "+val8+", "+toHexBinaryString(val8, 8));
// Test with written bitstream value
final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb);
final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, true /* outputMode */);
bs.writeBits31(true /* msbFirst */, preBits, 0);
bs.writeInt8(true /* msbFirst */, val8);
bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
final int rPre = (short) bs.readBits31(true /* msbFirst */, preBits);
final byte r8 = (byte) bs.readUInt8(true /* msbFirst */);
System.err.println("ReadPre "+rPre+", "+toBinaryString(rPre, preBits));
System.err.println("Read8 "+r8+", "+toHexBinaryString(r8, 8));
Assert.assertEquals(val8, r8);
}
public static void main(String args[]) throws IOException {
String tstname = TestBitstream02.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}
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